Merger roundup: Aetna-Humana extend deadline, Anthem-Cigna take hit

Regulators' reviews of the two major insurance mergers continue to be filled with twists and turns as the processes near their projected conclusion in the second half of the year. 

Here's the latest on the Aetna-Humana and Anthem-Cigna deals:  

Last week, seven Democratic senators came out against both mergers, citing concerns about increasing healthcare costs for both consumers and businesses. Federal regulators also recently expressed concerns about the Anthem-Cigna deal, and Bloomberg reports that representatives from the two companies were set to meet again Friday with antitrust officials from the Justice Department.

For more:
- here’s the SEC filing
- read the Courier-Journal article
- read the St. Louis Dispatch article
- here's the Reuters article 
- read the Bloomberg article